The women were arrested after relatives handed the recordings to police and the pair have now been warned they face jail after admitting slapping the man and jabbing him with a pen.

His family called for vulnerable patients’ care to be routinely videoed, saying responsible carers would have nothing to hide.

The victim, who cannot be named for legal reasons, suffered brain damage in an accident when he was younger. He was looked after at the Priory Highbank specialist unit for neurological disorders in Bury, Greater Manchester, part of the Priory Group.

However, his family feared staff had not investigated their concerns about his treatment and hid surveillance cameras around the man’s room.

Among footage recorded in August and September 2012, Page is heard saying: ‘You won’t beat us, b*****d. There’s this very fine line between abuse and neglect. Don’t you dare be sick on me boy, don’t you dare – you dirty scummy boy.’